Resort Improvement District #1, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.8 ppb (monitoring period 2024-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Resort Improvement District #1 serves about 803 people through 642 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Humboldt County, California. EPA system ID: CA1210022; phone on file: 707-986-1411. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2023 (1.26 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Resort Improvement District #1 is 2.1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.8 ppb |
| 2023 | 1.26 ppb |
| 2020 | 0 (not detected) |
| 2017 | 2.1 ppb |
Against other California systems
Of the 2,884 California systems with a lead result, the median latest reading is 0 ppb; 30 are over 15 ppb right now and 215 have gone over at some point. Resort Improvement District #1's 1.8 ppb sits at the 77th percentile in California and the 67th nationally (higher means more lead).
Neighbouring systems
43 other systems share Humboldt County; 19 of them have a higher latest lead result than Resort Improvement District #1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Eureka, City Of | 27,078 | 2.3 ppb |
| Humboldt C.S.D. | 19,775 | 2.05 ppb |
| Arcata, City Of | 18,857 | 2.54 ppb |
| Mckinleyville C.S.D. | 16,900 | 1.78 ppb |
| Fortuna, City Of | 12,133 | 1.8 ppb |
| Rio Dell, City Of | 3,300 | 0 (not detected) |
| Garberville Sanitary District | 2,041 | 0 (not detected) |
| Fieldbrook Glendale C.S.D. | 1,845 | 0 (not detected) |
| Willow Creek C.S.D. | 1,720 | 0 (not detected) |
| Del Oro Water Co-Ferndale | 1,662 | 3.5 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Whitethorn, CA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Resort Improvement District #1 whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.